[Vascular reactivity and metabolism of the reactive oxygen species and nitrogen in effects of low doses of radiation].

The disturbance of endothelium-dependent and endothelium-independent vascular reactions of relaxation was registered in the preparations of aorta of radiosensitive BALB/c mice, exposed to chronic external gamma-irradiation (cumulative dose of 0.43 Sv). Low doses of radiation induced an intensive hydrolysis of membrane phospholipids by phospholipase A2, displayed by an increase in the level of eukosanoisds--LTC4 and TxB2, formed under effects of lipid oxidases (lipoxygenase and cyclooxygenase) at the same time with O2 generation.

[Diagnosis of Campylobacter pylori based on the level of urea in the gastric juice].

Comparison of urea levels in 3 portions of gastric juice, obtained on an empty stomach, basal, and stimulated, from 28 patients, C. pylori carriers, and 20 patients without C. pylori carriership, has shown that the presence of this bacterium in the gastric mucosa is related not so much with a decrease in the absolute level of urea in the portion collected on an empty stomach but mostly with changes in this parameter in three portions of gastric juice collected in succession.

[Assessment of methods of rapid diagnosis of Campylobacter pylori in duodenal ulcers].

A study of diagnostic value of the Campylobacter pylori test as well as microbiological, bacteriological and biochemical findings in 134 patients with gastroduodenal ulcer and 20 healthy persons indicates that association of the Campylobacter pylori and biochemical tests are reliable and may be recommended for wide use in practical public health.